Note 7 - Equity - Exercise Price Range (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2023 $ / shares shares
Total number of options (in shares) | shares	484
Weighted average remaining life (Year)	4 years 6 months
Outstanding, weighted average exercise price (in dollars per share)	$ 6.82
Number of vested options (in shares) | shares	359
Exercisable, weighted average exercise price (in dollars per share)	$ 3.85
Range One [Member]
Lower range limit (in dollars per share)	0.7
Upper range limit (in dollars per share)	$ 5.24
Total number of options (in shares) | shares	349
Weighted average remaining life (Year)	4 years 6 months
Outstanding, weighted average exercise price (in dollars per share)	$ 2.3
Number of vested options (in shares) | shares	317
Exercisable, weighted average exercise price (in dollars per share)	$ 2.01
Range Two [Member]
Lower range limit (in dollars per share)	11.55
Upper range limit (in dollars per share)	$ 19.2
Total number of options (in shares) | shares	135
Weighted average remaining life (Year)	4 years 7 months 6 days
Outstanding, weighted average exercise price (in dollars per share)	$ 18.56
Number of vested options (in shares) | shares	42
Exercisable, weighted average exercise price (in dollars per share)	$ 17.63